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HLA-DQA2
Anti-HLA-DQA2 Recombinant Antibody Products
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For Research Use Only. Not For Clinical Use.
This gene belongs to the HLA class II alpha chain family. The encoded protein forms a heterodimer with a class II beta chain. It is located in intracellular vesicles and plays a central role in the peptide loading of MHC class II molecules by helping to release the CLIP molecule from the peptide binding site. Class II molecules are expressed in antigen presenting cells (B lymphocytes, dendritic cells, macrophages) and are used to present antigenic peptides on the cell surface to be recognized by CD4 T-cells. [provided by RefSeq, Jun 2010]
Protein class
Human disease related genes
Predicted location
Membrane
Single cell type specificity
Cell type enriched (Langerhans cells)
Immune cell specificity
Not detected in immune cells
Cell line specificity
Not detected
Interaction
Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. Dimer formation with HLA-DQB2, but not with HLA-DQB1, is required for efficient exit from the endoplasmic reticulum (ER). In the ER, forms a heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system; CD74 undergoes sequential degradation by various proteases; leaving a small fragment termed CLIP on each MHC class II molecule. MHC class II molecule interacts with HLA_DM, and HLA_DO in B-cells, in order to release CLIP and facilitate the binding of antigenic peptides. Association with HLA-DMA also occurs in skin Langerhans cells, in post-Golgi compartments.
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